def test_equals_2(self): self.assertEqual(sum_of_n(1), [0, 1])
def test_equals_4(self): self.assertEqual(sum_of_n(-4), [0, -1, -3, -6, -10])
def test_equals(self): self.assertEqual(sum_of_n(3), [0, 1, 3, 6])
def test_equals_3(self): self.assertEqual(sum_of_n(0), [0])